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Exception: FrozenError

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::RuntimeError, ::StandardError, ::Exception
Instance Chain:
self, ::RuntimeError, ::StandardError, ::Exception
Inherits: RuntimeError
Defined in: error.c,
error.c

Overview

Raised when there is an attempt to modify a frozen object.

[1, 2, 3].freeze << 4

raises the exception:

FrozenError: can't modify frozen Array

Class Attribute Summary

::Exception - Inherited

.to_tty?

Returns true if exception messages will be sent to a tty.

Class Method Summary

::Exception - Inherited

.exception

With no argument, or if the argument is the same as the receiver, return the receiver.
.new

Construct a new ::Exception object, optionally passing in a message.

Instance Method Summary

::Exception - Inherited

#==

Equality—If obj is not an ::Exception, returns false.
#backtrace

Returns any backtrace associated with the exception.
#backtrace_locations

Returns any backtrace associated with the exception.
#cause

Returns the previous exception ($!) at the time this exception was raised.
#detailed_message

Processes a string returned by #message.
#exception

With no argument, or if the argument is the same as the receiver, return the receiver.
#full_message

Returns formatted string of exception.
#inspect

Return this exception’s class name and message.
#message

Returns the result of invoking exception.to_s.
#set_backtrace

Sets the backtrace information associated with exc.
#to_s

Returns exception’s message (or the name of the exception if no message is set).

Constructor Details

.new(msg = nil, receiver: nil) ⇒ frozen_error

Construct a new FrozenError exception. If given the receiver parameter may subsequently be examined using the #receiver method.

a = [].freeze
raise FrozenError.new("can't modify frozen array", receiver: a)
[ GitHub ] 

  


# File 'error.c', line 2058



static VALUE
frozen_err_initialize(int argc, VALUE *argv, VALUE self)
{
    ID keywords[1];
    VALUE values[numberof(keywords)], options;

    argc = rb_scan_args(argc, argv, "*:", NULL, &options);
    keywords[0] = id_receiver;
    rb_get_kwargs(options, keywords, 0, numberof(values), values);
    rb_call_super(argc, argv);
    err_init_recv(self, values[0]);
    return self;
}


  







Instance Method Details



  

    #receiver  ⇒ Object   



  

    

Return the receiver associated with this FrozenError exception.


  



  [ GitHub ]